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Commit 14a61442 authored by Eric Sesterhenn's avatar Eric Sesterhenn Committed by Adrian Bunk
Browse files

BUG_ON conversion for fs/reiserfs 



This patch converts several if () BUG(); construct to BUG_ON();
which occupies less space, uses unlikely and is safer when
BUG() is disabled. S_ISREG() has no side effects, so the
conversion is safe.

Signed-off-by: default avatarEric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: default avatarAdrian Bunk <bunk@stusta.de>
parent 8d8f3cbe

fs/reiserfs/file.c

+2 −4
Original line number Diff line number Diff line
@@ -38,8 +38,7 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp) 
	int err;

	int jbegin_failure = 0;



	if (!S_ISREG(inode->i_mode))

		BUG();

	BUG_ON(!S_ISREG(inode->i_mode));



	/* fast out for when nothing needs to be done */

	if ((atomic_read(&inode->i_count) > 1 ||
@@ -125,8 +124,7 @@ static int reiserfs_sync_file(struct file *p_s_filp, 
	int n_err;

	int barrier_done;



	if (!S_ISREG(p_s_inode->i_mode))

		BUG();

	BUG_ON(!S_ISREG(p_s_inode->i_mode));

	n_err = sync_mapping_buffers(p_s_inode->i_mapping);

	reiserfs_write_lock(p_s_inode->i_sb);

	barrier_done = reiserfs_commit_for_inode(p_s_inode);

fs/reiserfs/item_ops.c

+4 −8
Original line number Diff line number Diff line
@@ -75,8 +75,7 @@ static int sd_create_vi(struct virtual_node *vn, 
static int sd_check_left(struct virtual_item *vi, int free,

			 int start_skip, int end_skip)

{

	if (start_skip || end_skip)

		BUG();

	BUG_ON(start_skip || end_skip);

	return -1;

}
@@ -87,8 +86,7 @@ static int sd_check_right(struct virtual_item *vi, int free) 


static int sd_part_size(struct virtual_item *vi, int first, int count)

{

	if (count)

		BUG();

	BUG_ON(count);

	return 0;

}
@@ -476,8 +474,7 @@ static int direntry_create_vi(struct virtual_node *vn, 


	vi->vi_index = TYPE_DIRENTRY;



	if (!(vi->vi_ih) || !vi->vi_item)

		BUG();

	BUG_ON(!(vi->vi_ih) || !vi->vi_item);



	dir_u->flags = 0;

	if (le_ih_k_offset(vi->vi_ih) == DOT_OFFSET)
@@ -575,8 +572,7 @@ static int direntry_check_right(struct virtual_item *vi, int free) 
		free -= dir_u->entry_sizes[i];

		entries++;

	}

	if (entries == dir_u->entry_count)

		BUG();

	BUG_ON(entries == dir_u->entry_count);



	/* "." and ".." can not be separated from each other */

	if ((dir_u->flags & DIRENTRY_VI_FIRST_DIRENTRY_ITEM)

fs/reiserfs/journal.c

+16 −33
Original line number Diff line number Diff line
@@ -718,8 +718,7 @@ static int add_to_chunk(struct buffer_chunk *chunk, struct buffer_head *bh, 
			spinlock_t * lock, void (fn) (struct buffer_chunk *))

{

	int ret = 0;

	if (chunk->nr >= CHUNK_SIZE)

		BUG();

	BUG_ON(chunk->nr >= CHUNK_SIZE);

	chunk->bh[chunk->nr++] = bh;

	if (chunk->nr >= CHUNK_SIZE) {

		ret = 1;
@@ -788,8 +787,7 @@ static inline int __add_jh(struct reiserfs_journal *j, struct buffer_head *bh, 
		/* buffer must be locked for __add_jh, should be able to have

		 * two adds at the same time

		 */

		if (bh->b_private)

			BUG();

		BUG_ON(bh->b_private);

		jh->bh = bh;

		bh->b_private = jh;

	}
@@ -2967,8 +2965,7 @@ static int do_journal_begin_r(struct reiserfs_transaction_handle *th, 
	int retval;



	reiserfs_check_lock_depth(p_s_sb, "journal_begin");

	if (nblocks > journal->j_trans_max)

		BUG();

	BUG_ON(nblocks > journal->j_trans_max);



	PROC_INFO_INC(p_s_sb, journal.journal_being);

	/* set here for journal_join */
@@ -3084,9 +3081,8 @@ struct reiserfs_transaction_handle *reiserfs_persistent_transaction(struct 
	if (reiserfs_transaction_running(s)) {

		th = current->journal_info;

		th->t_refcount++;

		if (th->t_refcount < 2) {

			BUG();

		}

		BUG_ON(th->t_refcount < 2);

		

		return th;

	}

	th = kmalloc(sizeof(struct reiserfs_transaction_handle), GFP_NOFS);
@@ -3126,9 +3122,7 @@ static int journal_join(struct reiserfs_transaction_handle *th, 
	 ** pointer

	 */

	th->t_handle_save = cur_th;

	if (cur_th && cur_th->t_refcount > 1) {

		BUG();

	}

	BUG_ON(cur_th && cur_th->t_refcount > 1);

	return do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_JOIN);

}
@@ -3141,9 +3135,7 @@ int journal_join_abort(struct reiserfs_transaction_handle *th, 
	 ** pointer

	 */

	th->t_handle_save = cur_th;

	if (cur_th && cur_th->t_refcount > 1) {

		BUG();

	}

	BUG_ON(cur_th && cur_th->t_refcount > 1);

	return do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_ABORT);

}
@@ -3178,8 +3170,7 @@ int journal_begin(struct reiserfs_transaction_handle *th, 
		current->journal_info = th;

	}

	ret = do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_REG);

	if (current->journal_info != th)

		BUG();

	BUG_ON(current->journal_info != th);



	/* I guess this boils down to being the reciprocal of clm-2100 above.

	 * If do_journal_begin_r fails, we need to put it back, since journal_end
@@ -3324,8 +3315,7 @@ int journal_end(struct reiserfs_transaction_handle *th, 
		/* we aren't allowed to close a nested transaction on a different

		 ** filesystem from the one in the task struct

		 */

		if (cur_th->t_super != th->t_super)

			BUG();

		BUG_ON(cur_th->t_super != th->t_super);



		if (th != cur_th) {

			memcpy(current->journal_info, th, sizeof(*th));
@@ -3444,9 +3434,7 @@ int journal_end_sync(struct reiserfs_transaction_handle *th, 


	BUG_ON(!th->t_trans_id);

	/* you can sync while nested, very, very bad */

	if (th->t_refcount > 1) {

		BUG();

	}

	BUG_ON(th->t_refcount > 1);

	if (journal->j_len == 0) {

		reiserfs_prepare_for_journal(p_s_sb, SB_BUFFER_WITH_SB(p_s_sb),

					     1);
@@ -3556,9 +3544,8 @@ static int check_journal_end(struct reiserfs_transaction_handle *th, 
	 ** will be dealt with by next transaction that actually writes something, but should be taken

	 ** care of in this trans

	 */

	if (journal->j_len == 0) {

		BUG();

	}

	BUG_ON(journal->j_len == 0);



	/* if wcount > 0, and we are called to with flush or commit_now,

	 ** we wait on j_join_wait.  We will wake up when the last writer has

	 ** finished the transaction, and started it on its way to the disk.
@@ -3592,9 +3579,8 @@ static int check_journal_end(struct reiserfs_transaction_handle *th, 
					unlock_journal(p_s_sb);

				}

			}

			if (journal->j_trans_id == trans_id) {

				BUG();

			}

			BUG_ON(journal->j_trans_id == trans_id);

			

			if (commit_now

			    && journal_list_still_alive(p_s_sb, trans_id)

			    && wait_on_commit) {
@@ -4074,9 +4060,7 @@ static int do_journal_end(struct reiserfs_transaction_handle *th, 
	set_commit_trans_len(commit, journal->j_len);



	/* special check in case all buffers in the journal were marked for not logging */

	if (journal->j_len == 0) {

		BUG();

	}

	BUG_ON(journal->j_len == 0);



	/* we're about to dirty all the log blocks, mark the description block

	 * dirty now too.  Don't mark the commit block dirty until all the
@@ -4173,8 +4157,7 @@ static int do_journal_end(struct reiserfs_transaction_handle *th, 
				      journal, jl, &jl->j_tail_bh_list);

		lock_kernel();

	}

	if (!list_empty(&jl->j_tail_bh_list))

		BUG();

	BUG_ON(!list_empty(&jl->j_tail_bh_list));

	up(&jl->j_commit_lock);



	/* honor the flush wishes from the caller, simple commits can

fs/reiserfs/namei.c

+3 −6
Original line number Diff line number Diff line
@@ -67,8 +67,7 @@ inline void set_de_name_and_namelen(struct reiserfs_dir_entry *de) 
{

	struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;



	if (de->de_entry_num >= ih_entry_count(de->de_ih))

		BUG();

	BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));



	de->de_entrylen = entry_length(de->de_bh, de->de_ih, de->de_entry_num);

	de->de_namelen = de->de_entrylen - (de_with_sd(deh) ? SD_SIZE : 0);
@@ -80,8 +79,7 @@ inline void set_de_name_and_namelen(struct reiserfs_dir_entry *de) 
// what entry points to

static inline void set_de_object_key(struct reiserfs_dir_entry *de)

{

	if (de->de_entry_num >= ih_entry_count(de->de_ih))

		BUG();

	BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));

	de->de_dir_id = deh_dir_id(&(de->de_deh[de->de_entry_num]));

	de->de_objectid = deh_objectid(&(de->de_deh[de->de_entry_num]));

}
@@ -90,8 +88,7 @@ static inline void store_de_entry_key(struct reiserfs_dir_entry *de) 
{

	struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;



	if (de->de_entry_num >= ih_entry_count(de->de_ih))

		BUG();

	BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));



	/* store key of the found entry */

	de->de_entry_key.version = KEY_FORMAT_3_5;

fs/reiserfs/stree.c

+1 −3
Original line number Diff line number Diff line
@@ -1476,9 +1476,7 @@ static int maybe_indirect_to_direct(struct reiserfs_transaction_handle *th, 
	int n_block_size = p_s_sb->s_blocksize;

	int cut_bytes;

	BUG_ON(!th->t_trans_id);



	if (n_new_file_size != p_s_inode->i_size)

		BUG();

	BUG_ON(n_new_file_size != p_s_inode->i_size);



	/* the page being sent in could be NULL if there was an i/o error

	 ** reading in the last block.  The user will hit problems trying to